Miles pbatt



M. PRATT.

Cobking Stqve.

Patnted Dec. 11, 1866.

fi i 'nesses;

N,PETER& PHOTO-UTHOGRAPHER, WASHINGTON D C.

TO ALL PERSONS TO WHOM THESE PRESEN S SHALL 00mm;

ment and oombination of an air-register with the saidfiue and boiler,combined as sethforthgw I F theflue, and heat the side or back of theboiler and'esoape into apipeplaced on the top of thefiue; An air @Iliithegg 1 g t @ffi I IMPROVED STOVE BOILER.

MILES PRATT, OF-BOSTON," MASSACHUSETTS, t

Letters Patent No. 60,419, ated December 11, 1866. i j

flit: some r'stsrtztttin ttzttiflettetz fizztmt amt ttg samel:

Be it known that I, MILES PRATT, of Boston, in theloounty of Sufi'olk,andState of. Massaehusettshhave invented an improved Boiler for Stoves;[and do hereby deolare the same to bje fullydesoribed in the following II,

specification, and represented in the accompanying drawings, of which-Figure 1 is a top view. Figure 2, an end elevation. Figure 3, atransverse section. Figure 4, a horizontal section. Figure 5,- a rearelevation; and s Figure 6, a, longitudinal seotion of it. i h I i i v ih h The nature of my. invention eonsists in a boileras made with a flueto extend upward against its bask j against the same, and to projectinto the water space, in uianner as hereinafter set forth; also, in thearrange I The advantages of my improvement over a boiler having a fluegoing up tln'oughitsinternal or water spalee ii are, that myimprovedboiler can be made with oueeoveronly, to extend fromjend to end of it,and will hold more 5 water than one of the external size, but with theflue going up through the water space.- 1 i 1 In 'the drawings, Adenotes the boiler, B the flue, and U the cover of therboilerf th'e saidooverbeing hing ed to a shelf, D, east or fixed on the top ofthe boiler.Theflue projects hali} way. into} the water sip aoe of the, boiler, orruns up along its back, such back beiug curved "rnward in frontlof theflue, ias represented. Theii ie .1 is open, ,both at top and bottom, itbeing intended that the lower end ofitheiflue shalljbeplacedi direotlyiover i the smoke-discharge opening of a stove, or over anopeuinginfthe. top plateof a stove, while thefboiler is set: on or over suchopening, the same beinjgso that. thesmoke, as dischar'ged fro n thestove, may pass through register, provided with a; slide-valve, is'applied to the backypart of the: said flue QasQseen atF,iand is forthepurpose of admitting air into the fine as oocasionmay require. Were theflue placed wholly within the boilei l andat its rear part,- there wouldbe likely to beangular spaces between the flue and the rear part" of theboiler 3;: and it would be difficult to' clean these spaeesfromeollections of dirt or extraneous matters, when formed therein. Whenthe flue goes through the water space, the boiler has generally tobejulade withtwo covers, arranged on opposite sides of the flue. Myarrangement ofthe flue enables the" boiler to bernadejwith butohe cover,as represented in the drawings. 1 h j v i l h I do not claim a stoveboiler as constructed witha the to extend up through its water space,but what I dbl e1aim,isi r i The improved boiler sis-made with a iluearranged against its ,side' or rear, and as having an air-register iapplied to such flue, substantially as set forth. i i i I 1 i 5 i 3MILES PRATT.

Witnesses: I

R. H. EDDY,- Gnoa'en Ammaws.

